1.1 本规范涵盖了用于船体结构和其他预期与海水频繁或持续直接接触的海洋应用以及类似环境的研磨状态下的高镁铝合金产品( 注1 )。本规范涵盖的铝合金产品包括表2[表3]和表4[表5]所示的平板、卷材和板材的合金温度，以及表6[表7]所示的挤压型材的合金温度。 注1: 其他铝合金回火产品可能适用于海洋和类似环境，但可能不需要 B928/B928M .参见规范 2009年B209M 用于其他铝板和板合金回火产品。有关其他铝挤压合金回火产品，请参阅规范 B221 或 2.21亿英镑 和/或用于铝挤压产品的其他相关规范。 1.2 合金和回火名称符合ANSI H35.1/H35.1 （M） 。等效的统一编号系统合金名称为表1中A9前面的合金名称，例如，根据惯例，A95083表示5083 E527 。 1.3 以国际单位制（表3和表5）或英寸磅单位（表2和表4）表示的数值应单独视为标准。每个系统中规定的值可能不是完全相等的；因此，每个系统应相互独立使用。将两个系统的值合并可能导致不符合标准。 1.4 有关本规范中包含新铝和铝合金的验收标准，请参见 附件A2 。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。 本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。

1.1 This specification covers high magnesium aluminum-alloy products in the mill finish condition that are intended for marine hull construction and other marine applications where frequent or constant direct contact with seawater is expected and for similar environments ( Note 1 ). Aluminum alloy products covered by this specification include the alloy-tempers of flat sheet, coiled sheet, and plate shown in Table 2 [Table 3] and Table 4 [Table 5], and alloy-tempers of extruded profiles shown in Table 6 [Table 7]. Note 1: There are other aluminum alloy-temper products that may be suitable for use in marine and similar environments, but which may not require the corrosion resistance testing specified by B928/B928M . See Specification B209/B209M for other aluminum sheet and plate alloy-temper products. For other aluminum extruded alloy-temper products see Specification B221 or B221M and/or other relevant specifications for aluminum extruded products. 1.2 Alloy and temper designations are in accordance with ANSI H35.1/H35.1 (M). The equivalent Unified Numbering System alloy designations are those of Table 1 preceded by A9, for example, A95083 for 5083 in accordance with Practice E527 . 1.3 The values stated in either SI units (Table 3 and Table 5) or inch-pound units (Table 2 and Table 4) are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of each other. Combining values from the two systems may result in non-conformance with the standard. 1.4 For acceptance criteria for inclusion of new aluminum and aluminum alloys in this specification, see Annex A2 . 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.